DLN_GET_DEVICE_SN

GET_DEVICE_SN Command

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The DLN_GET_DEVICE_SN command retrieves a device serial number. The serial number is factory- assigned and cannot be changed.

 typedef struct
 {
    DLN_MSG_HEADER header;
 } __PACKED_ATTR DLN_GET_DEVICE_SN_CMD;

Parameters:

header

Defines the DLN message header DLN_MSG_HEADER. The header contains several predefined fields and is used to identify and route messages. When sending the command, a user must fill the following fields:

  • size - The size of the message. Must be equal to the size of the DLN_GET_DEVICE_SN_CMD structure.
  • msgId - Defines the message. For the DLN_GET_DEVICE_SN command it must be set to 0x0031. You can use the DLN_MSG_ID_GET_DEVICE_SN constant.
  • echoCounter - Can be used to link a command to a response. The response will have the same echoCounter value. This field can be any numerical value from 0 to 0xFFFF (65536).
  • handle - A handle to the DLN-series adapter. You may specify either a handle to a specific device (stream) or the HDLN_ALL_DEVICES value.

DLN_GET_DEVICE_SN Response

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The adapter sends the DLN_GET_DEVICE_SN response after the command execution. The response will contain the device serial number.

 typedef struct
 {
    DLN_MSG_HEADER header;
    DLN_RESULT result;
    uint32_t sn;
 } __PACKED_ATTR DLN_GET_DEVICE_SN_RSP;

Parameters:

header

Defines the DLN message header DLN_MSG_HEADER. The response header contains the following fields:

  • size - The size of the message. It is equal to the size of the DLN_GET_DEVICE_SN_RSP structure.
  • msgId - Defines the message. For the DLN_GET_DEVICE_SN response it is set to 0x0031. The DLN_MSG_ID_GET_DEVICE_SN constant can be used.
  • echoCounter - Links a command to a response. The echoCounter value is copied from the respective command header.
  • handle - A handle to the DLN-series adapter. You may specify either a handle to a specific device (stream) or the HDLN_ALL_DEVICES value.
result

Contains the result of the command execution. The following values are available:

  • DLN_RES_SUCCESS - the device serial number has been successfully retrieved.
sn
A device serial number.